How percentage difference works
Difference = |a − b| ÷ ((a + b) / 2) × 100.
Try an example
80 and 100 → 22.22222222222%.
Good to know
Defined here for nonnegative values whose mean is nonzero; it is symmetric.
Your privacy
Processing happens on this device. We do not upload your input, put it in share links or save it to your favourites. Closing this tab discards the working input; downloaded results remain wherever you save them.